How to write a text on a building picture
I finally found two plugins: fSpy and BLAM (this last one is outdated),  thanks to seseri, and intrac!
Recommended solution: use fSpy
fSpy is an external small software that you can download (Linux, Mac, Windows). Then you just have to place a few points on your picture to specify which are the aligned lined. Then, you need to save the project, and load it from the fSpy blender plugin (also need to be installed). The camera is automatically configured, and in my case it worked greatly! Just, I think the picture I gave above is not ideal, since I've the feeling that the building is not even a &quot;cube&quot;: the higher you are, the fewer windows you have. So I just followed a line of window to find my parallel lines.
The package is well documented. In case you need more help, see [this link]2 for example.
Second solution, but outdated: BLAM
You may also be interested by BLAM , but this plugin is outdated:
No longer maintained. Check out fSpy instead

You can find an example of use here.